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From: jimr@hp-lsd.COS.HP.COM (Jim Rogers)
Newsgroups: comp.unix.questions
Subject: Re: Piping into two processes simultaneously
Message-ID: <7370012@hp-lsd.COS.HP.COM>
Date: 6 Sep 90 15:48:40 GMT
References: <7053@milton.u.washington.edu>
Organization: HP Logic Systems Division - ColoSpgs, CO
Lines: 22

My solution is not elegant, but it does work:

1)	Create a fifo file (named pipe) using the mkfifo command.
	  i.e.  mkfifo foofifo

2)	Start the process(s) which write to the named pipe first.
	I found it easiest to run this part in the background.
	 i.e.  cat foo.input | tee foofifo | lp &

3)	Start the processes which read from the named pipe in the
	foreground after the background process has been started.
	 i.e.  cat foofifo | more

This will allow the data to be simultaneously printed and displayed to your
screen.

I suspect there are more elegant approaches.  I hope this note string
brings some of them out.


Jim Rogers
Hewlett Packard Company